[llvm] fix(bolt/**.py): fix comparison to None (PR #94012)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-bolt

Author: Eisuke Kawashima (e-kwsm)

<details>
<summary>Changes</summary>

from PEP8 (https://peps.python.org/pep-0008/#programming-recommendations):

> Comparisons to singletons like None should always be done with is or is not, never the equality operators.

---
Full diff: https://github.com/llvm/llvm-project/pull/94012.diff


2 Files Affected:

- (modified) bolt/docs/generate_doc.py (+2-2) 
- (modified) bolt/test/perf2bolt/lit.local.cfg (+1-1) 


``````````diff
diff --git a/bolt/docs/generate_doc.py b/bolt/docs/generate_doc.py
index d8829daf677b4..763dc00b44ca3 100644
--- a/bolt/docs/generate_doc.py
+++ b/bolt/docs/generate_doc.py
@@ -45,7 +45,7 @@ def parse_bolt_options(output):
         cleaned_line = line.strip()
 
         if cleaned_line.casefold() in map(str.casefold, section_headers):
-            if prev_section != None:  # Save last option from prev section
+            if prev_section is not None:  # Save last option from prev section
                 add_info(sections, current_section, option, description)
                 option, description = None, []
 
@@ -76,7 +76,7 @@ def parse_bolt_options(output):
                 description = [descr]
                 if option.startswith("--print") or option.startswith("--time"):
                     current_section = "BOLT printing options:"
-                elif prev_section != None:
+                elif prev_section is not None:
                     current_section = prev_section
             continue
 
diff --git a/bolt/test/perf2bolt/lit.local.cfg b/bolt/test/perf2bolt/lit.local.cfg
index 05f41ff333b0e..4ee9ad08cc78a 100644
--- a/bolt/test/perf2bolt/lit.local.cfg
+++ b/bolt/test/perf2bolt/lit.local.cfg
@@ -1,4 +1,4 @@
 import shutil
 
-if shutil.which("perf") != None:
+if shutil.which("perf") is not None:
     config.available_features.add("perf")
\ No newline at end of file

``````````

</details>


https://github.com/llvm/llvm-project/pull/94012